For people that don’t have the cash, but do have an iPad, AKAI publish the iMPC: https://www.akaipro.com/impc
How does iMPC compare to something like BeatMaker?
Such as: use of AUs and external MIDI, sequences/scenes/patterns with different tempos or time signatures?
The bit on the App Store video to grab and move a chunk of a pattern looks handy.